Oiling mechanism



May 6, 1930. J. A. LUND 01mm MECHANISM Filed Feb. 17," 1927 Patented May 6, 1930- UNITED STATES- PATENTJOFFI CE JOHN AUGUST, LUND, F BA'IAVIA, ILLINOIS, ASSIGNOR '10 CHALLENGE COMPANY, ;A

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Application filed February 17,1927. Srial'No. 168,934. I

This invention relates to lubrication and concerns itself Wlth'mGELDS forconveylng the lubricant to the point or part desiring lubrication in combination with means for returning lubricant that may pass beyond .the part to be lubricated. V The invention comprises the novel structure and combination of parts hereinafter described and more particularly pointed out and defined in the appended claim;

- In the accompanying drawings which illustrate a preferred embodimentof this in:

'vention and in which similar reference numerals refer to slnnlar features in the'dlfferent views:

F lgure 1 1s a longitudmal sectional view through a shaft bearing embodying this invention. v Figure 2 is an enlarged se'ctionalview taken upon the line 11-11 of Figural.

As shown on the drawings:

As illustrative of thisinventlon there is shown a'casing 1 in which a shaft2 is'journaled by means of roller bearings 3' and 4. Itwill be noted that theroller bearing 4 is located in a lateral extensionl of the casing. It might be mentioned that the'illustrated apparatus is a'portion of a windmill'stru'cture and that the operating parts, includingigear 10, of the windmill are adapted for elevating the lubricant which may originally be put in i the bottom of the casing 1 to a runway 5' from which it is adapted to travel and drop upon that portion of the shaft 5 which is located within the extension 1--. A coil spring 6 sur- 7 rounds the shaft '2 in the extension 1 and extends from a point rearwardly of the mouth of the runway to a point closely adjacent the roller bearing 4. The coil spring is secured 7' for rotation with the shaft 2 and thespirals act as a conveyor fo'r'conveyin'g the oil from the runway 5 to the bearing 4. H

As the lubricant is conveyed to the right by the spiral spring 6, some of it will obviously pass beyond the ball bearing 4 and eventually escape from the casing and bef-lost. Conse-1 quently in time the casing willbecomeex right hand side of the ball bearing 4, forrotation withsaid shaft. '11; will be notedthat this spring 7 eitendsbetween the bearing-4' I Consequently, the action of the spring 7 will convey the lubricant to the left against the actionof the spring 6. This not only results 1n more effective lubrication for the bearing,

will merely drop from the shaft Qand collect in a return runway 9 at the bottom of the extension 1?, From this runwaythe lubricant may return to the casing 1.] p i From theforegoi'ng it will begappreciated that a very effective system of lubrication has been provided which conserves the lubricant and prevents the same from escape with respect to its bearings.

I am' aware that manyfchanges may be made and numerous details of construction may be varled through a wide range wlthout departing from the principles of this invenbut it also prevents the lubricant from escap- V mg from the casing. Any excess lubricant tion' and I, therefore, do not purpose limiting the patent granted 'hereon'otherwise than necessitated by the prior art.

I claim as'my invention In an oiling mechanism for windmills, a.

casing having an oilchamber inthe bottom thereof, abea'ring housed in the casing, a shaft journaled in and extendingthrough the bearing, .a runway in the casing and positioned ebove'the shaft; toothed gear means to elevate oil from the oil chamber to the said runway, a coil spring on the shaft adapted toreceive oildropped fromIthe-said runwayand to carry it to the said bearing, and a coil spring.

of reversed pitch on the shaft and on the other side of the bearing adapted to return oil 7 to thesaidchamber. V 7 I Intestimony whereof I have hereunto sub-J V e5 scribedmy name. a v

' v 7 JOHN AUGUST LUND.

hausted with respect-to lubricant. Inorder to overcomethis, objection a second 'ispiral :spring 7 is placed upon the shaft 2upon the V7 p a 

